[PATCH] normal/menu_entry: Add grub_calloc failure check

Add a NULL check to prevent failure from grub_calloc in update_screen.
This stops possible NULL pointer dereference and avoids unexpected behavior.

Signed-off-by: Sridhar Markonda <[email protected]>
---
 grub-core/normal/menu_entry.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/grub-core/normal/menu_entry.c b/grub-core/normal/menu_entry.c
index 8b0d17e3f..dfba20cb9 100644
--- a/grub-core/normal/menu_entry.c
+++ b/grub-core/normal/menu_entry.c
@@ -296,7 +296,11 @@ update_screen (struct screen *screen, struct per_term_screen *term_screen,
 	  pos = linep->pos + (term_screen - screen->terms);
 
 	  if (!*pos)
-	    *pos = grub_calloc (linep->len + 1, sizeof (**pos));
+	    { 
+	      *pos = grub_calloc (linep->len + 1, sizeof (**pos));
+	      if (!*pos)
+		return;
+	    }
 
 	  if (i == region_start || linep == screen->lines + screen->line
 	      || (i > region_start && mode == ALL_LINES))
-- 
2.47.3


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